EP1253412A2 - Druckmesssystem - Google Patents
Druckmesssystem Download PDFInfo
- Publication number
- EP1253412A2 EP1253412A2 EP02405304A EP02405304A EP1253412A2 EP 1253412 A2 EP1253412 A2 EP 1253412A2 EP 02405304 A EP02405304 A EP 02405304A EP 02405304 A EP02405304 A EP 02405304A EP 1253412 A2 EP1253412 A2 EP 1253412A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- line
- pressure
- extension
- measuring system
- pressure measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; Measuring pressure in body tissues or organs
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/04—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges in the form of flexible, deformable tubes, e.g. Bourdon gauges
- G01L7/043—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges in the form of flexible, deformable tubes, e.g. Bourdon gauges with mechanical transmitting or indicating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0026—Transmitting or indicating the displacement of flexible, deformable tubes by electric, electromechanical, magnetic or electromagnetic means
Definitions
- the invention relates to a pressure measuring system with one of one Fluid-flowed line, the line having a line section has, in the on a flattened outside the line is provided with a membrane, the pressure changes characteristic movement can be transmitted to a pressure sensor is.
- Such a pressure measuring system is known from US 5,392,653.
- Such measuring systems are in cassettes of an aspiration system used.
- a pump is used Aspirated liquid.
- the pump for example a roller pump or a venturi pump.
- Independently of the pump used is due to the flow towards it
- Resistance in the hoses or lines at one Occlusion at the end of the hose in the hoses or lines create a negative pressure.
- common systems one connects the hose system directly with a via a T-branch Pressure sensor.
- Such aspiration systems are now used, for example, in cataract surgery (cataract) used and serve the purpose during lens fragments resulting from the operation together with a Aspirate infusion liquid.
- Today's surgical technique consists of such lens parts with the attached to the aspiration system suck in, hold on to connected instrument to bring a suitable position and ultrasound shred and then vacuum. This necessarily arises occlusion for a period of time because the Suction opening is blocked by lens parts. It builds up subsequently a larger one inside the aspiration system Negative pressure on. When loosening the occlusion, which is mostly happens very quickly, the vacuum is released and pulls Infusion fluid after what in the above operation collapse of the anterior chamber of the surgery Eye can lead.
- This system has the disadvantage that in the pressure measuring chamber very strong from the circular cross section of the pipe system, i.e. of the aspiration tube, deviating geometrical relationships to rule. It is therefore difficult to complete the chamber fill with fluid and the aspirated lens fragments often remain stuck in the chamber. It is not possible to do this Hose system for reprocessing in the autoclave sterilizer because there is no way to use it to be completely emptied and lens fragments to be rinsed out safely.
- the invention lies Task based on a pressure measurement system of the type mentioned specify which for reprocessing in the autoclave sterilizer can be used.
- this nose has a hole through which the Extension in the form of a pin protrudes in a simple manner mechanically and at the same time releasable a force sensor with the deflections of the membrane.
- Fig. 1 shows a perspective Representation of such an arrangement according to the invention.
- the aspiration tube 3 is indicated by an arrow 4 Flowing through fluid.
- a Line section 5 shown, in which on a flattened Outside 6 of the line 3, one can be seen in FIG. 2
- Membrane 7 is provided in the middle of Fig. 1 .
- the membrane 7 is insoluble with a connected by the line 3 pioneering nose 10, which in the The embodiment shown in FIG. 1 via a bore 11 has, in which a pin 12 can be used.
- the pin is 12 articulated at a fixed point 13 so that movements of the Membrane 7 by movements of the nose 10 in increased pivoting movements translate the pin 12.
- FIG. 2 now shows a sectional drawing through the arrangement 1 at normal pressure conditions.
- a piece of hose, the hose section 5 is provided with the thin-walled membrane 7, which is indicated by the arrow when a vacuum occurs 8 indicated in Fig. 3, in the hose 3 in the direction of Moved center of the tube, which is defined by the longitudinal axis 14.
- 3 shows the sectional drawing through the arrangement 1 with such a negative pressure 8.
- the membrane 7 has, for example a thickness 15 of 0.2 millimeters. The deformations this membrane 7 are exaggerated in FIG. 2 for clarification shown.
- FIG. 4 shows a schematic cross-sectional view through the tube 3 in the area of the pin 12.
- the pin 12 is anchored in its pivot point 13 and can only pivot about the axis designated by the arrow 16. This makes it possible to transmit a very slight movement of the membrane 7 to a force sensor 17.
- the pin 12 here engages in a pin 18 which transmits the movement to a boom 19 of the force sensor 17.
- FIG. 5 shows an embodiment of a pressure measuring system with such an implementation according to FIG. 4.
- the hose section 5 ends in two flanges 20 for connecting a line system.
- the pressure measuring chamber is shown in the contracted state.
- the nose 10 is cylindrical.
- the metallic pin 12, the hidden point 13, not visible here, is clamped on one side transmits the movement of the membrane 7 as a lever to the force sensor 17.
- FIG. 6 shows the embodiment of FIG. 5 in one Sectional view.
- the pressure measuring chamber in the hose section 5, the transmission pin 12 and the entire hose system are in one cassette 30 integrated plastic.
- This cassette 30 also belongs the bearing 31 of the pin 12 and the casing 32 of the pressure measuring chamber.
- the pressure sensor 17, however, is part of a Cassette holder 40 and a screw 41 with this firmly connected.
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Electromagnetism (AREA)
- Hematology (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
- Fig. 1
- eine perspektivische Darstellung einer erfindungsgemässen Anordnung.
- Fig. 2
- eine Schnittzeichnung durch die Anordnung nach Fig. 1 bei normalen Druckverhältnissen,
- Fig. 3
- eine Schnittzeichnung durch die Anordnung nach Fig. 1 bei Unterdruck,
- Fig. 4
- eine Querschnittsansicht durch den Schlauch im Bereich des Stabes,
- Fig. 5
- ein Ausführungsbeispiel einer Umsetzung der Membranbewegung nach Fig. 4, und
- Fig. 6
- eine Schnittansicht des Ausführungsbeispiel nach Fig. 5.
Der Stift 12 greift hier in einen Zapfen 18, der die Bewegung auf einen Ausleger 19 des Kraftsensors 17 überträgt.
Claims (6)
- Druckmesssystem mit einer von einem Fluid (4) durchflossenen Leitung (3), wobei die Leitung (3) einen Leitungsabschnitt (5) aufweist, in dem auf einer abgeflachten Aussenseite (6) der Leitung (3) eine Membran (7) vorgesehen ist, deren für Druckänderungen charakteristische Bewegung (8) an einen Drucksensor (17) übertragbar ist, dadurch gekennzeichnet, dass die Membran (7) unlösbar mit einer von der Leitung (3) wegweisenden Nase (10) verbunden ist, die über einen im wesentlichen quer zur longitudinalen Ausrichtung (14) des Leitungsabschnittes (5) ausgerichteten Fortsatz (12) verfügt, der in mechanischer und zugleich lösbarer Weise einen Kraftsensor (17) als Drucksensor beaufschlagt (18, 19).
- Druckmesssystem nach Anspruch 1, dadurch gekennzeichnet, dass der Fortsatz (12) in einen quer zu ihm angeordneten Zapfen (18) eingreift, mit dem ein einseitig eingespannter Ausleger (19) des Kraftsensors (17) beaufschlagbar ist.
- Druckmesssystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die besagte Nase (10) eine Bohrung (11) aufweist, durch die der Fortsatz in Gestalt eines Stiftes (12) ragt, der durch mechanischen Kontakt (18, 19) den Kraftsensor (17) in lösbarer Weise kontaktiert.
- Druckmesssystem nach Anspruch 3, dadurch gekennzeichnet, dass der Stift (12) auf der dem Kraftsensor (17) gegenüberliegenden Seite in einem gegenüber der Leitung (3) festen Punkt (13) angelenkt ist.
- Druckmesssystem nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Leitungsabschnitt (5) mit Nase (10) und Fortsatz (12) in einer Kassette (30) integriert ist, dass der Kraftsensor (17) in einer Kassettenaufnahme (40) befestigt ist, dass die Kassette (30) und die Kassettenaufnahme (40) komplementäre Führungselemente (33, 43) aufweisen, so dass bei einem Einsetzen der Kassette (30) in die Kassettenaufnahme (40), der Fortsatz (12) zentriert mit dem Drucksensor (17) verbindbar ist.
- Druckmesssystem nach Anspruch 5, dadurch gekennzeichnet, dass das Führungselement (43) der Kassettenaufnahme (40) eine Bohrung aufweist, durch die der Fortsatz (12) hindurchführbar ist, so dass er in einen Zapfen (18) des Drucksensors (17) eingreift.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH7562001 | 2001-04-25 | ||
CH7562001 | 2001-04-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1253412A2 true EP1253412A2 (de) | 2002-10-30 |
EP1253412A3 EP1253412A3 (de) | 2003-07-30 |
EP1253412B1 EP1253412B1 (de) | 2004-11-17 |
Family
ID=4534301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02405304A Expired - Lifetime EP1253412B1 (de) | 2001-04-25 | 2002-04-15 | Druckmesssystem |
Country Status (8)
Country | Link |
---|---|
US (1) | US6575040B2 (de) |
EP (1) | EP1253412B1 (de) |
JP (2) | JP2002340716A (de) |
AT (1) | ATE282821T1 (de) |
CA (1) | CA2381456C (de) |
DE (1) | DE50201544D1 (de) |
ES (1) | ES2233791T3 (de) |
PT (1) | PT1253412E (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1977680A1 (de) * | 2007-04-03 | 2008-10-08 | Invendo Medical Gmbh | Druckmesseinrichtung |
EP3318290A1 (de) | 2016-11-03 | 2018-05-09 | This AG | Wechselkassette für ophthalmologische apparatur |
DE102017121347A1 (de) | 2017-09-14 | 2019-03-14 | Turck Holding Gmbh | Schlauchdrucksensor für eine Schlauchpumpenanordnung |
WO2019129480A1 (de) * | 2017-12-29 | 2019-07-04 | Endress+Hauser Flowtec Ag | ROHR FÜR EINEN MEßWANDLER, MEßWANDLER MIT EINEM SOLCHEN ROHR SOWIE DAMIT GEBILDETES MEßSYSTEM |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20206474U1 (de) * | 2002-04-24 | 2003-09-04 | Braun Melsungen Ag | Drucksensor für Infusionsschlauchpumpen |
US7096738B2 (en) * | 2004-03-18 | 2006-08-29 | Rosemount Inc. | In-line annular seal-based pressure device |
WO2006119557A1 (en) * | 2005-05-09 | 2006-11-16 | Holden Phaco Pty Ltd | Aspiration tube vacuum sensor, connector and connector assembly |
NL2001637C2 (nl) * | 2008-05-30 | 2009-12-01 | Nedap Nv | Druksensor voor een melktransportstelsel. |
JP2010276534A (ja) * | 2009-05-29 | 2010-12-09 | Horiba Advanced Techno Co Ltd | 流体圧力センサ |
JP2010276533A (ja) * | 2009-05-29 | 2010-12-09 | Horiba Advanced Techno Co Ltd | 流量測定装置及び流体圧力測定装置 |
US8343106B2 (en) | 2009-12-23 | 2013-01-01 | Alcon Research, Ltd. | Ophthalmic valved trocar vent |
PL2515774T3 (pl) | 2009-12-23 | 2014-08-29 | Alcon Res Ltd | Okulistyczna kaniula trokara z zaworem |
RU2515432C1 (ru) * | 2012-12-07 | 2014-05-10 | Закрытое акционерное общество "Екатеринбургский центр МНТК "Микрохирургия глаза" | Способ хирургического лечения врожденной катаракты у детей |
TWM488626U (zh) * | 2014-05-07 | 2014-10-21 | Jiao Hsiung Industry Corp | 量洩兩用氣壓錶 |
KR101968324B1 (ko) * | 2016-12-12 | 2019-04-12 | 주식회사 미래엔지니어링 | 다이어프램 조립체 및 이를 포함하는 압력 트랜스미터 시스템 |
USD925037S1 (en) | 2019-05-17 | 2021-07-13 | Oertli-Instrumente Ag | Medical instrument for eye surgical purposes |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2163936A5 (en) * | 1971-12-07 | 1973-07-27 | Rhone Poulenc Sa | Manometer - monitoring the response of a flexible walled (silicone rubber) tube to internal pressure esp for physiological app |
US3841157A (en) * | 1973-05-31 | 1974-10-15 | C Willock | Drop bulb pressure-measuring device |
US5505092A (en) * | 1994-03-04 | 1996-04-09 | Dinsmore Instrument Company | Non-invasive fluid condition sensing transducer |
US5756900A (en) * | 1993-12-28 | 1998-05-26 | Tasco Japan Co., Ltd. | Pressure sensing apparatus |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5000049A (en) * | 1988-08-02 | 1991-03-19 | Cooper Robert P | Pressure gauge for medical applications |
US5115676A (en) * | 1990-01-10 | 1992-05-26 | Setra Systems, Inc. | Flush-mounted pressure sensor |
WO1993024817A1 (en) | 1992-06-03 | 1993-12-09 | Allergan, Inc. | Pressure transducer interface |
US5869766A (en) * | 1995-10-03 | 1999-02-09 | Nt International, Inc. | Non-contaminating pressure transducer module |
US6171253B1 (en) * | 1999-05-04 | 2001-01-09 | Apex Medical, Inc. | Flat tube pressure sensor |
-
2002
- 2002-04-11 CA CA2381456A patent/CA2381456C/en not_active Expired - Lifetime
- 2002-04-15 ES ES02405304T patent/ES2233791T3/es not_active Expired - Lifetime
- 2002-04-15 AT AT02405304T patent/ATE282821T1/de active
- 2002-04-15 PT PT02405304T patent/PT1253412E/pt unknown
- 2002-04-15 EP EP02405304A patent/EP1253412B1/de not_active Expired - Lifetime
- 2002-04-15 DE DE50201544T patent/DE50201544D1/de not_active Expired - Lifetime
- 2002-04-19 JP JP2002117000A patent/JP2002340716A/ja active Pending
- 2002-04-25 US US10/131,180 patent/US6575040B2/en not_active Expired - Lifetime
-
2008
- 2008-07-07 JP JP2008176441A patent/JP2008286807A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2163936A5 (en) * | 1971-12-07 | 1973-07-27 | Rhone Poulenc Sa | Manometer - monitoring the response of a flexible walled (silicone rubber) tube to internal pressure esp for physiological app |
US3841157A (en) * | 1973-05-31 | 1974-10-15 | C Willock | Drop bulb pressure-measuring device |
US5756900A (en) * | 1993-12-28 | 1998-05-26 | Tasco Japan Co., Ltd. | Pressure sensing apparatus |
US5505092A (en) * | 1994-03-04 | 1996-04-09 | Dinsmore Instrument Company | Non-invasive fluid condition sensing transducer |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1977680A1 (de) * | 2007-04-03 | 2008-10-08 | Invendo Medical Gmbh | Druckmesseinrichtung |
EP3318290A1 (de) | 2016-11-03 | 2018-05-09 | This AG | Wechselkassette für ophthalmologische apparatur |
WO2018083182A1 (de) | 2016-11-03 | 2018-05-11 | This Ag | Wechselteil für ophthalmologische apparatur |
US11793921B2 (en) | 2016-11-03 | 2023-10-24 | This Ag | Replacement part for ophthalmological apparatus |
DE102017121347A1 (de) | 2017-09-14 | 2019-03-14 | Turck Holding Gmbh | Schlauchdrucksensor für eine Schlauchpumpenanordnung |
WO2019129480A1 (de) * | 2017-12-29 | 2019-07-04 | Endress+Hauser Flowtec Ag | ROHR FÜR EINEN MEßWANDLER, MEßWANDLER MIT EINEM SOLCHEN ROHR SOWIE DAMIT GEBILDETES MEßSYSTEM |
US11441930B2 (en) | 2017-12-29 | 2022-09-13 | Endress+Hauser Flowtec Ag | Tube for a transducer, transducer comprising such a tube, and measuring system formed therewith |
Also Published As
Publication number | Publication date |
---|---|
CA2381456A1 (en) | 2002-10-25 |
US6575040B2 (en) | 2003-06-10 |
DE50201544D1 (de) | 2004-12-23 |
CA2381456C (en) | 2011-08-02 |
ATE282821T1 (de) | 2004-12-15 |
EP1253412A3 (de) | 2003-07-30 |
US20020157476A1 (en) | 2002-10-31 |
ES2233791T3 (es) | 2005-06-16 |
PT1253412E (pt) | 2005-03-31 |
EP1253412B1 (de) | 2004-11-17 |
JP2008286807A (ja) | 2008-11-27 |
JP2002340716A (ja) | 2002-11-27 |
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